Arrow Lock MK33-BD-03-LC Grade 2 Asylum Function Knob

Arrow MK33-BD-03-LC Grade 2 Asylum Function Knob is an excellent choice for commercial applications where robust security meets accessibility. This Grade 2 cylindrical lock features a stylish ball knob design, ensuring ease of use without compromising on safety. The conventional less cylinder configuration allows for customization, while the bright brass finish adds a touch of elegance to any door. Built with a cold-rolled steel lock chassis coated in zinc dichromate, this lock is engineered for durability and corrosion resistance. It accommodates standard door thicknesses of 1-3/8" to 1-3/4" and offers a 2-3/8" backset, with options for additional sizes if needed. The solid brass latch, with a 1/2" throw, guarantees smooth operation, while the non-handed design allows for flexible installation. The MK33-BD-03-LC meets ANSI F87 standards, making it suitable for asylum functions, and is UL listed for safety. It comes with a solid brass 6-pin cylinder, keyed to a 5-pin stock, and includes two brass keys. With a one-year limited warranty, this lock promises reliability and peace of mind, making it an ideal solution for institutional settings.

Grade 2 Asylum Function Knob

Grade 2 Asylum Cylindrical Lock, Ball Knob, Conventional Less Cylinder, Bright Brass Finish, Non-handed

Arrow MK Series offer the designer, architect and contractor simple solutions to accessibility requirements. Their clean designs, architectural finishes and available functions make them ideal for commercial applications where heavy duty grade one hardware may not be necessary.

The Arrow MK Series has a clear design and is a simple solution to accessibility requirements.

The MK Series is available in several finishes and functions that make them ideal for commercial applications where heavy duty grade one hardware may not be necessary.

• Lock Chassis – Cold rolled steel with zinc dichromate finish for corrosion resistance. Requires standard 2-1/8" (53.97mm) bore through door.
• Backset – 2-3/8" (60.32mm) standard. 2-3/4" (69.85mm), 3-3/4" (95.25mm) and 5" (127mm) available.
• Door Thickness – 1-3/8" (34.92mm) to 1-3/4" (44.45mm). Latch – Brass with 1/2" (12.7mm) throw.
• Latch housing is steel, with zinc dichromate finish for corrosion resistance. 7/8" (22.225mm) bore in edge of door is required.
• Latch Front – Brass, bronze or stainless steel. Standard faceplate for 2-3/8” (60.32.mm) backset measures 2-1/4” (57.15mm) x 1” (25.40mm) with a flat front, for 2-3/4” (69.85mm) backset standard faceplate measures 2-1/4” (57.15mm) x 1-1/8” (28.57mm) with beveled front 1/8” (3.17mm) in 2” (50.8mm). 
• Strike – Brass, bronze or stainless steel. Standard “T” strike measures 2-3/4" (69.85mm) x 1-1/8" (28.57mm). Optional ANSI A115.1 strike measures 4-7/8" (123.82mm) x 1-1/4" (31.75mm). All strikes have a 1-1/4" (31.75mm) lip to center dimension.
• Handing– Reversible.
• Cylinder, Standard – Solid brass 6 pin cylinder with Arrow “A” keyway, keyed to 5 pin for stock. Can be masterkeyed, grandmaster keyed and construction masterkeyed. Conventional cylinders are also available in a variety of competitive manufacturer’s keyways. Supplied with two 5 pin brass keys for stock. Available in Schlage CS keyway and other competitive keyways.

Resources

• MK Series Cut Sheet
• MK Series Dummy Knob Template
• MK Series Grade 2 Cylindrical Knob Locks Cut Sheet
• MK Series Template